Ballpoint pen



FIG. 1 is a perspective view of the front, right and top of a ballpointpen according to a first embodiment showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a front reference view in usage thereof;

FIG. 8 is a bottom reference view in usage thereof;

FIG. 9 is a perspective view of the front, right and top of a ballpointpen according to a second embodiment showing my new design;

FIG. 10 is a front view thereof;

FIG. 11 is a bottom view thereof;

FIG. 12 is a bottom view thereof;

FIG. 13 is a left view thereof;

FIG. 14 is a right side view thereof;

FIG. 15 is a front reference view in usage thereof; and,

FIG. 16 is a bottom reference view in usage thereof.

The ornamental design for a ballpoint pen, as shown and described.